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Research on the Influence of Debt Financing on Corporate Investment--Based on Political Relations Pe
[期刊论文] 作者：Liu Jinzhao,
来源：Review of Global Academics 年份：2014
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[期刊论文] 作者：Hong Sun,XiuRun Ge,FuJun Niu,Ge Liu,JinZhao Zhang,,
来源：Sciences in Cold and Arid Regions 年份：2014
One of the main construction problems in permafrost regions is protecting permafrost thermal stability. Although ventilating ducts and crushed-rock layers were successfully used in railway embankment...
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